Post and handrail support



FIG. 1 is a front-perspective view of a post and handrail support showing my new design;

FIG. 2 is a right-side view of my new design, the left-side view being a mirror image thereof:

FIG. 3 is a top view of my new design, the bottom view being a mirror image thereof; and,

FIG. 4 is a back view of my new design. 

The ornamental design for the post and handrail support, as shown and described. 